On Fri, Dec 2, 2011 at 7:33 AM, Alexey Dobriyan <adobriyan@xxxxxxxxx> wrote: > I'm trying to add compiling with -march=native to the kernel. > The problem is that then some config options become discoverable at > the beginning of the compilation. For example, > CONFIG_X86_L1_CACHE_SHIFT=6 can be derived from "--param l1-cache-line-size=64". > I suspect this is no-go, because all the dependency logic must be > duplicated somewhere else (in the march=native script) for the above > to work. > > Is there any cleaner way I'm missing? > > In theory, such script could even turn off CONFIG_CPU_SUP_AMD > if it detects Intel CPU. Hrph, this is harder than it looks because "silentoldconfig" is done at the beginning rewriting whatever changes done to .config by hand. :-( -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
